There are five sedimentary basins in Mali:
with too little exploration activity: 5 wells, only one of which (well Yarba-1, located at the south of the Taoudeni Basin) has revealed gas shows at 2,294 m in the Pre-Cambrian.
All the seismic surveys executed with varying quality do not exceed 10,000 Km. The surface geology of Mali is divided into the following regions:
Mali still is an under-explored country for Hydrocarbons considering the 5 vast sedimentary basins and the large surface. The poor results in hydrocarbon prospecting are due to a highly complicated structure system, the stratigraphic setup, and the misreading of the country subsurface geology.
The great Taoudeni basin occupies 1.8 Million km2, of which more than 1 Million are in Mali.
The Taoudeni, is the largest sedimentary basin in West Africa.